Ventilating apparatus



- (No Model.)I 2 Sheets-Sheet 1. S. W. HUDSON.

VENTILATING APPARATUS. No. 2755,628. PatentedMar. 28,1882.

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i UNITED STATES PATENT OFFICE.

VSAMUEL W. HUDSON, OF HUDSONDALE, PENNSYLVANIA.

VENTILATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 255,628, dated March28, 1882.

` Application filed December 7, 1881. (No model.)

To all ywhom it may concern Beit known that l, SAMUEL W. HUDSON, ofHudsondale,in the countyof Carbon and State of Pennsylvania, haveinvented an Improved Ventilating Apparatus, of which the following is aspecification.

My yinvention is designed more especially for the ventilation of mines,but may of course be used for various similar purposes.

The invention, broadly stated, consists in creating a ventilating-draftin mines or other places by means of a blast apparatus placed in aclosed room or chamber with which the shaft of the mine communicates,the blastpipe of the apparatus leading out of the chamber and being soarranged that the blast will entrain or draw out with it the air in thechamber, thus creating a rarefaction or partial vacuum there in, whichcauses the air from the mine constantly to rise to counteract or correctit. By this means, thus vgenerally stated, a constant Ventilating-draftthrough the mine is insured and a complete ventilation accomplished.

In the accompanying drawings, which illustrate my invention, arranged inthe form now best known to me, Figure lis a transverse section throughmy organization of apparatus. Fig. 2 is a detail view, showing themanner of introducing water into the blast apparatus; and Fig. 3 isadetail sectional view ofthe hollow fanshaft and its bearings.

The room,chamber, or compartment A within which the blast apparatus isplaced, communicates directly with the Ventilating-shaft B of the mineor other place to be ventilated. Within' this chamber a driving pulley,O, is mounted in bearings and driven from without by any suitable power.A belt, D, extends from this drivin g-pulley to a smaller` pulley,E,

mounted on the shaftF of the blast apparatus, which shaft is mounted insuitablebearings within the chamber.

A blast-fan of any'usual construction, except as hereinafterspecitied,on the shaft F, is provided with a suitable cover, G, andblastpipe H. The blast-pipe H projects into a larger pipe, I, whichextends from the exterior of the chamber back into it, as shown in thedrawings.

From this organization of the apparatus it form draft through the mineand insures its thorough ventilation.

In order to render the apparatus more etli- `cient I introduce a jetofwater into the blast apparatus. The water is broken up andthoroughlymingled with theairdischarged through the blast-pipe H. Thespecific gravity of the blast is by this means made greater and itsvelocity and momentum increased. It will therefore draw more air fromthe chamber into the pipe I, and consequently with the same power I amenabled to produce a greater vac-v uum than would otherwise be the case.

In Figs. 2 and 3 of the drawings I have shown the manner of introducingthe jet of water. The shaft F is made hollow and is perforated withinthe cover of the blast-fan, so that the water is thrown out bycentrifugal action. In order to expel the water with considerable forceI may place within the shaft small fans, which extend from the sides ofthe pipe inwardly radially. One end, F', of the hollow fan -shaft isclosed and turns in a suitable bearing, G. The other end, F2, is hollowand turns in a hearing, G'. This end of the shaft is prolonged andextends into the watersupply pipe H, the joint between the shaft andpipe being packed at h. The watersupply pipe may enterinto the closedchamber at any desired point, the joint being made tight.

The water may be supplied from an elevated tank, and the supply-pipeprovided with a stopcock, so that any quantity of water with any desiredhead may be introduced. However, the

water-su ppl y tank need not be elevated, as the centrifugal action inthe shaft F will be sufficient to draw in the supply of water from amoderate distance.

I am aware that it is not new, broadly, to ventilate a mine by creatinga partial vacuum in a chamber with which the mine communi-` cates.

Having thus described my invention., what I claim, and desire to secureby Letters Patent,

1. The combination ofthe Ventilating-shaft ot' a, mine, the closedchamber placed over or in communication with the shaft, a blastapparatus situa-ted within the chamber, its blastpipe, and the pipe oropening' into which it projects, the parts being arranged substantiallyas and for the purpose set forth.

2. lhe combination of the blast apparatus, its blast-pipe, a pipe, I,into which the blastpipe projects, and a water-inlet within the blastapparatus, substantially as set forth.

3. The combination of the Ventilating-shaft, the closed. cha1nber,theblast apparatus, its blast-pipe, the pipe into which the blast-pipeprojects, the hollow perforated shaft of the blast apparatus, andmechanism for driving the blast, substantially as set forth.

In testimony whereof I have hereunto subzo scribed my name this 25th dayof November,

SAMUEL W. HUDSON. Witnesses:

GEO. R. HERRICK, E. O. DAVIDSON.

